Improvement in combined latches and locks



V C. ROBERTS.

Gamhined Latches and Locks.

P10148119]; Patented March 3 1874.

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WTNESSESZ XNVENTOR:

UNITED STATES PATENT omen CLARK ROBERTS, OF WINCHESTER, ILLINOIS.

IMPRQVEMENT IN COMBINED LA'I 'CHES AND LOCKS.

Specification forming part of Letters Patent No. 148,091, dated March 3, 1874 application filed August 11, 1873.

To all whom it may concern:

Be it known that I, CLARK Ronnnrs, of Winchester, in the county of Scott and in the State of Illinois, have invented a new and useful Improvement in Door=Fastenings, the same being a Combined Latch and Look; and I do hereby declare that the following is a full, clear and exact description thereof, reference being had to the accompanying drawing making a part of this specification.

My invention relates to door-fastenings in which the latch and lock-bolt are combined in one and the same piece, which operates either with or without springs, as desired.

Figure 1 represents the parts composing my improved door-latch and look as they appear when locked. Fig. 2 is a perspective-view of the catch; Fig. 3, a view of the lock with the face-plate removed, showing the latch drawn back and the locking devices in a state of rest. Fig. 4 is a viewof the lockingdog, and Fig. 5 of the lever for operating the locking-dog.

The latch A is of an angular and curved form, widening toward its lower end, hung upon a pivot, z, and provided with a curved tail-piece, A, the end a of which projects between the lugs m m on the hub O, by which latter the latch is operated or withdrawn from the catch. The catch has a curved flange, B, against which the projecting portion 19 of the latch impinges, and by means of which it is forced back when the door is made to close. The latch A may gravitate to its place behind the catch, or be forced thereto by the hub G, which is operated by the ordinary spindle, with knobs at either end. D is a pivoted lever, provided with a lug, t, and a pointed cam, s, forming a notch, g, therein. The pivoted locking-dog E extends over the lever D through the notch g in the latter.. A shoulder, r, is formed on the key is turned toward the catch it forces up the opposite end of said lever, andthe cam s is carried into notch o in the dog E, raising said dog into the notch formed in the latch A,

and bringing its end against the shoulder r. V

The notch 12, with the pointed cam .9, holds the partsin the locked position until the lever D is again operated upon by key F, turned in the opposite direction, when the lug t brings down the dog E, and leaves the latch A free to be withdrawn from the catch. A stud, K, between the main portion and tail of the latch determines the extent of oscillation of the latter, and serves as a socket for one screw of the face-plate.

If in any case it is found desirable that the latch. be rendered more active, a small steel spring may be inserted above the hub O, and, being bent down between the main portion and tail of the latch, one end will rest against the part A, as shown in dotted lines, Fig. 3, and tend to force out the latch.

I claim as my invention The latch A A, with shoulder r, in c nubination with dog E, provided with notch c, and notched lever I), provided with cam s and lug t, as herein described.

CLARK ROBERTS.

Witnesses:

* T. H. KIRKMAN,

JACOB O. BALsLEY. 

